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US 11,706,420 B2Granted
Method and device for entropy coding/decoding
AssigneeLG Electronics Inc.
InventorsJaehyun Lim, Byeongmoon Jeon, Yongjoon Jeon, Seungwook Park, Jungsun Kim, Joonyoung Park, Hendry Hendry, Naeri Park, Chulkeun Kim
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Abstract
The present invention relates to an entropy decoding method which includes: generating context related to a bin that forms a codeword of a syntax element; and performing arithmetic decoding of the bin based on the context.
Claims10
An entropy encoding method comprising the steps of:
- deriving a value of a syntax element cbf_luma that specifies whether a luma residual other than 0 is present in a current luma transform block;
- deriving a bin constituting a codeword of the syntax element cbf_luma based on the value of the syntax element cbf_luma;
- and
- deriving context information on the bin constituting the codeword of the syntax element cbf_luma to perform an arithmetic encoding operation on the bin,
- wherein the step of deriving the context information includes deriving the context information based on information on a transform depth of the current luma transform block,
- wherein a luma residual other than 0 is not present in the current luma transform block based on a case that the value of the syntax element cbf_luma is 0, and
- wherein at least one luma residual other than 0 is present in the current luma transform block based on a case that the value of the syntax element cbf_luma is 1.
4 more elements
A non-transitory computer readable storage medium storing encoded information generated by an entropy encoding method, the method comprising:
- deriving a value of a syntax element cbf_luma that specifies whether a luma residual other than 0 is present in a current luma transform block;
- deriving a bin constituting a codeword of the syntax element cbf_luma based on the value of the syntax element cbf_luma;
- and
- deriving context information on the bin constituting the codeword of the syntax element cbf_luma to perform an arithmetic encoding operation on the bin,
- wherein the step of deriving the context information includes deriving the context information based on information on a transform depth of the current luma transform block,
- wherein a luma residual other than 0 is not present in the current luma transform block based on a case that the value of the syntax element cbf_luma is 0, and
- wherein at least one luma residual other than 0 is present in the current luma transform block based on a case that the value of the syntax element cbf_luma is 1.
4 more elements
Dependencies are inferred from the claim text.